End of an eraser,kebab stick rolled across surface,edge of card,rolled piece of card.
Pinched paper lines,squashed dots,scrumpled squares,cut up postage labels.
There are some lovely colours in 5.as the Brusho black is made up of browns and greys and blues (which you can't see !) It would work to use as collage and inspiration for bark perhaps as a dyed and painted fabric.
Anyway that's all for today.